A6902D:Up to 1 A Switch Step Down regulator with Adjustable Current Limit for Automotive Applications

The A6902D is a complete and simple step down switching regulator with adjustable current limit. Based on a voltage mode structure it integrates a current error amplifier to have a constant voltage and constant current control. By means of an on board current sense resistor and the availability of the current sense pins (both compatible to Vcc and for Cs- compatible with GND too) a current limit programming is very simple and accurate. Moreover constant current control can be used to charge NiMH and NiCd batteries.The device can be used as a standard DC/DC converter with adjustable current limit (set by using the external sense resistor). The internal robust P-channel DMOS transistor with a typical of 250 mΩ assures high efficiency and a minimum dropout even at high output current level. The internal limiting current (latched function) of typical value of 2.5 A protects the device from accidental output short circuit avoiding dangerous loads damage. If the temperature of the chip goes higher than a fixed internal threshold (150 °C with 20 °C hysteresis), the power stage is turned off.

Other protections beside thermal shutdown complete the device for a safe and reliable application: overvoltage protection, frequency folback overcurrent protection and protection vs. feedback disconnection. The internal fixed switching frequency of 250 kHz, and the SO-8 package pin allow to built an ultra compact DC/DC converter with a minimum board space.

Key Features

  • Protection against feedback disconnection
  • Internal current limiting
  • Thermal shutdown
  • Voltage feedforward
  • 250 kHz Internally fixed frequency
  • Qualified following the AEC-Q100 requirements (see PPAP for more details)
  • Operating input voltage from 8 V to 36 V
  • Up to 1 A DC output current
  • Precise 3.3 V (±2 %) reference voltage
  • Zero-load current operation
  • Output voltage adjustable from 1.235 V to 35 V
Product Specifications
DescriptionVersionSize
DS5503: Up to 1 A step down switching regulator with adjustable current limit for automotive applications5.0251 KB
Flyers
DescriptionVersionSize
A798x, A597x switching regulators for car power management1.0714 KB
Up to 3 A switching step-down regulators1.0739 KB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
A6902DSO-8Tube1.4251000NECEAR99MALAYSIA
A6902D13TRSO-8Tape And Reel1.4251000NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
A6902DSO-8AutomotiveEcopack1 (*)md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_a5o7ud10eea-wspc-(a6902d13tr)_a_ver2_signed.pdf
md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_a5o7ud10eea-wspc-(a6902d13tr)_a_ver2.xml
A6902D13TRSO-8AutomotiveEcopack1 (*)md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_a5o7ud10eea-wspc-(a6902d13tr)_a_ver2_signed.pdf
md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_a5o7ud10eea-wspc-(a6902d13tr)_a_ver2.xml
Up to 1 A step down switching regulator with adjustable current limit for automotive applications A6902D
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
Very low drop voltage regulators with inhibit KFXX
md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_a5o7ud10eea-wspc-(a6902d13tr)_a_ver2_signed.pdf A6902D
md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_a5o7ud10eea-wspc-(a6902d13tr)_a_ver2.xml A6902D